From: John Fastabend <john.r.fastabend@intel.com>
Date: Thu, 16 Jan 2014 10:30:05 +0000 (-0800)
Subject: ixgbe: reinit_locked() should be called with rtnl_lock
X-Git-Tag: firefly_0821_release~176^2~4570^2~143^2~5
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=8f4c5c9fb87aa113f33ddeb4028fb0de8e18311d;p=firefly-linux-kernel-4.4.55.git

ixgbe: reinit_locked() should be called with rtnl_lock

ixgbe_service_task() is calling ixgbe_reinit_locked() without
the rtnl_lock being held. This is because it is being called
from a worker thread and not a rtnl netlink or dcbnl path.

Add rtnl_{un}lock() semantics. I found this during code review.

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index 3ca59d21d0b2..b445ad121de1 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -6392,7 +6392,9 @@ static void ixgbe_reset_subtask(struct ixgbe_adapter *adapter)
 	netdev_err(adapter->netdev, "Reset adapter\n");
 	adapter->tx_timeout_count++;
 
+	rtnl_lock();
 	ixgbe_reinit_locked(adapter);
+	rtnl_unlock();
 }
 
 /**